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Główny
Drugorzędny
Trzeciorzędny
Poziom trudności
Novice
Siła
Pull
Chwyty
None
Mechanika
Isolation

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Lie on your back with your knees bent and your feet on the ground to allow for a flat lower back.
Tuck your chin in and raise the back of the head slightly off the ground before lowering back down.
As soon as you feel the ground with the back of your head, repeat the movement without resting on the ground.